Magnetic core



FIG. 1 is a perspective view of a magnetic core showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof, the rear being identical;

FIG. 5 is a side elevational view thereof the opposite side being identical; and,

FIG. 6 is a cross-sectional view thereof taken generally along sectional lines 6--6 of FIG. 4. 

The ornamental design for magnetic core, as shown and described. 